LG UU48W U32, Engineering Product Data Book

Page: 151 / 158

MULTI/SINGLE CAC
2. Installation Space
6
Installation of Outdoor Units
̰
Series installation
[Unit : mm(inch)]
2.2 Air guide work
2.3 Lightning safety zone
1. To protect outdoor unit from lightning, it should be placed within lightning safety zone.
 Safety zone
2. Power cable and communication cable should be 1.5m away from lightning rod.
3. High resistance grounded system should be performed against induced lightning or indirect stroke.
4. If the building has no lightning protection, outdoor may be damage from lightning. This should be informed to
customer or building owner in advance.
• One row of stand alone installation • Rows of collective installation (2 or more)
In case of out door unit is located outdoor cabin of
apartment or flats, then the efficiency can drop and
system pressure increases thus finally damaging the
compressor or other components in the system by heat
short circuit.
Building Height [m] 20 30 45 60
Protection Angle [
ȋ
]
55 45 35 25
600(23-19/32) or more
1000(39-3/8) or more
2000(78-3/4) or more
300(11-13/16)
or more
L
• L should be smaller than H
:
L ≤ H
600(23-19/32) or more
1500(59-1/16) or more
3000(118-1/8) or more
300(11-13/16)
or more
H
<Without air guide>
Safety device activation
<With air guide>
Normal operation
[Example]
Ground
Safe zone
Lightning rod
Protection Angle (25˚~55˚)
1.5m 1.5m
Lightning rod
Regarding the safety
from atmosphere
electricity, follow the
local or national reg-
ulations